Upgrade Plesk 11.0.9 to 10.5.30 fails

[MerijnE]

PRODUCT, VERSION, VERSION OF MICROUPDATE, OPERATING SYSTEM, ARCHITECTURE

I am running Plesk 10.0.9 on Windows 2008 32bits, auto upgraded to the latest micro update #62.

PROBLEM DESCRIPTION

During the upgrade i received the following message:
upgrading Parallels Panel core components...
MSI: Error! The specified account already exists.

Failed to install 'C:\ParallelsInstaller\parallels\PANEL-WIN_11.5.30\dist-msi-Microsoft-2003-i386\plesk.msi': Fatal error during installation. (Error code 1603)
Error: The installation of the package 'plesk' failed with code 1603. (upgrade: upgrading Parallels Panel core components...)

STEPS TO REPRODUCE

Everytime i rerun the installer C:\ParallelsInstaller\parallels\PANEL-WIN_11.5.30\dist-msi-Microsoft-2003-i386\plesk.msi it gives the same messages during 'Copying new files...'.

ACTUAL RESULT

Plesk Panel is not functioning anymore and the upgrade cannot continue.

EXPECTED RESULT

Well a finished upgrade

ANY ADDITIONAL INFORMATION

The server is running as a virtual machine on Hyper-V 2012 R2.

 

[MerijnE]

In the event log i found a message around the time of the installation which leads me to http://kb.odin.com/en/122220.
The file is now php-cgi.exe and not php.exe but the resolution works. The installer now continues and complains about missing language files.